encfs reversewrite mode with MAXPATH files causing sync software to loop

[axet]

Hello!

Using encfs in reversewrite mode causing sync (yandexdisk) software to loop on reading directory when filename is very long.

Basically need to create:

touch "~/encfs/private/notes-html/Все об оперативной памяти — гайд и тесты в разных режимах работы _ Оперативная память _ Блог _ Клуб DNS.html"

then

encfs --reversewrite ~encfs ~/encrypted

sync software will stuck with fuse debug mode showing a lot of infinite messages "unique 3333333 opcode: READDIR nodeid:332134123" keep repeating this line forever. with 100% cpu load booth encfs and sync software.

[Keisial]

The filename "Все об оперативной памяти — гайд и тесты в разных режимах работы _ Оперативная память _ Блог _ Клуб DNS.html" has 187 bytes (to represent 108 characters)

On a test filesystem, that is encrypting for me as yYLTcxx6yMnhuFtoBxT6DPXeKVqAtAyRmy,4MY0QwvI5aPpaj82oJjM43tsPoaeWzYB2khNZautSEt-YvZthiajkz0XABALF33mXvAmzPqbWXKJ,,2DS9Qfevx,9ucGuMjqYo4h,oye3Ynsi90UkfhclkommJLETRMo-D5S,A4Wt6bu2PHNEl19Q3n7,jY2oT-mfoFRfFVT2VIfCZIpFZ0X--A8DK81b9Fx3NVOcfXn0l5H61E7e6dcR16,xp5X3s20
which is 260 characters. I suspect yandex is getting stuck when finding a filename with more than 255 bytes, which is the limit of most filesystems. Still, this is a bug in yandexdisk, not in encfs.

You can change filename encoding to stream, in which case it uses shorter filenames. For example this one becomes for me Wd,m6N2ffRQtmH8YZqrpPuxI142h3HCMMnEpGsk6gSiRI34JHgVSXUGy0LaQvR,Yg1WoTb6hdWLpGlq0boflrHpSmtvLbqwCGUNqaGPkYADq8Sr9S47nmoEMBfexUo9vMfsVTciAAEYPTvYqFj9fYTPwVmTRLYqTnvmCWuHzATZ4dYjU2MoMM75qU6Zm-p5bLBNeAEV6AAm3Me,5zwA62Xx,dCpUjZwmnoQWbJmx,h5quEJiql7RJM8y6djd, a "mere" 252 bytes.